<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Mail
 * @subpackage Transport
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Sendmail.php 18951 2009-11-12 16:26:19Z alexander $
 */


/**
 * @see Zend_Mail_Transport_Abstract
 */
require_once 'Zend/Mail/Transport/Abstract.php';


/**
 * Class for sending eMails via the PHP internal mail() function
 *
 * @category   Zend
 * @package    Zend_Mail
 * @subpackage Transport
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Mail_Transport_Sendmail extends Zend_Mail_Transport_Abstract
{
	/**
	 * Subject
	 * @var string
	 * @access public
	 */
	public $subject = null;


	/**
	 * Config options for sendmail parameters
	 *
	 * @var string
	 */
	public $parameters;


	/**
	 * EOL character string
	 * @var string
	 * @access public
	 */
	public $EOL = PHP_EOL;


	/**
	 * Constructor.
	 *
	 * @param  string $parameters OPTIONAL (Default: null)
	 * @return void
	 */
	public function __construct($parameters = null)
	{
		$this->parameters = $parameters;
	}


	/**
	 * Send mail using PHP native mail()
	 *
	 * @access public
	 * @return void
	 * @throws Zend_Mail_Transport_Exception on mail() failure
	 */
	public function _sendMail()
	{
		if ($this->parameters === null) {
			$result = mail(
			$this->recipients,
			$this->_mail->getSubject(),
			$this->body,
			$this->header);
		} else {
			$result = mail(
			$this->recipients,
			$this->_mail->getSubject(),
			$this->body,
			$this->header,
			$this->parameters);
		}
		if (!$result) {
			/**
			 * @see Zend_Mail_Transport_Exception
			 */
			require_once 'Zend/Mail/Transport/Exception.php';
			throw new Zend_Mail_Transport_Exception('Unable to send mail');
		}
	}


	/**
	 * Format and fix headers
	 *
	 * mail() uses its $to and $subject arguments to set the To: and Subject:
	 * headers, respectively. This method strips those out as a sanity check to
	 * prevent duplicate header entries.
	 *
	 * @access  protected
	 * @param   array $headers
	 * @return  void
	 * @throws  Zend_Mail_Transport_Exception
	 */
	protected function _prepareHeaders($headers)
	{
		if (!$this->_mail) {
			/**
			 * @see Zend_Mail_Transport_Exception
			 */
			require_once 'Zend/Mail/Transport/Exception.php';
			throw new Zend_Mail_Transport_Exception('_prepareHeaders requires a registered Zend_Mail object');
		}

		// mail() uses its $to parameter to set the To: header, and the $subject
		// parameter to set the Subject: header. We need to strip them out.
		if (0 === strpos(PHP_OS, 'WIN')) {
			// If the current recipients list is empty, throw an error
			if (empty($this->recipients)) {
				/**
				 * @see Zend_Mail_Transport_Exception
				 */
				require_once 'Zend/Mail/Transport/Exception.php';
				throw new Zend_Mail_Transport_Exception('Missing To addresses');
			}
		} else {
			// All others, simply grab the recipients and unset the To: header
			if (!isset($headers['To'])) {
				/**
				 * @see Zend_Mail_Transport_Exception
				 */
				require_once 'Zend/Mail/Transport/Exception.php';
				throw new Zend_Mail_Transport_Exception('Missing To header');
			}

			unset($headers['To']['append']);
			$this->recipients = implode(',', $headers['To']);
		}

		// Remove recipient header
		unset($headers['To']);

		// Remove subject header, if present
		if (isset($headers['Subject'])) {
			unset($headers['Subject']);
		}

		// Prepare headers
		parent::_prepareHeaders($headers);

		// Fix issue with empty blank line ontop when using Sendmail Trnasport
		$this->header = rtrim($this->header);
	}

}

